CVE-2025-46957 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier. This vulnerability arises from insufficient input sanitization in certain form fields within the AEM platform, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When a victim user accesses the affected page containing the malicious payload, the injected script executes in their browser context. This can lead to session hijacking, unauthorized actions performed on behalf of the user, or the theft of sensitive information accessible in the browser session. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS v3.1 base score is 5.4 (medium severity), with an attack vector of network (remote exploitation), low attack complexity, requiring low privileges, and user interaction (victim must visit the malicious page). The scope is changed, meaning the vulnerability can affect resources beyond the initially vulnerable component. No known exploits are reported in the wild as of the publication date (June 10, 2025), and no official patches have been linked yet. Given AEM's role as a widely used enterprise content management system, this vulnerability could be leveraged to compromise the integrity and confidentiality of web applications hosted on affected versions.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager for their web content management and digital experience platforms. Exploitation can lead to unauthorized script execution in users' browsers, potentially resulting in credential theft, session hijacking, or unauthorized actions performed with the victim's privileges. This can damage organizational reputation, lead to data breaches involving personal data protected under GDPR, and disrupt business operations. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, the risk extends to critical sectors where trust and data integrity are paramount. The medium severity score reflects that while the vulnerability requires some user interaction and low privileges, the potential for lateral impact and data exposure is non-trivial. Additionally, the changed scope indicates that the impact could extend beyond the initially vulnerable component, increasing the risk profile for interconnected systems.

European organizations should prioritize the following mitigation steps: 1) Immediate assessment of all Adobe Experience Manager instances to identify versions at or below 6.5.22. 2) Implement strict input validation and output encoding on all form fields, especially those exposed to external users, to prevent script injection. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4) Monitor web application logs for unusual input patterns or repeated attempts to inject scripts. 5) Educate users and administrators about the risks of clicking on untrusted links or visiting suspicious pages hosted on AEM platforms. 6) Stay alert for official Adobe patches or security advisories and apply updates promptly once available. 7) Consider deploying Web Application Firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. 8) Conduct regular security testing, including automated scanning and manual penetration testing focused on XSS vulnerabilities in AEM environments.